#303E7B#303E7B

#303E7B is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.6% C 0.104 H 271.1°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#303E7B
RGB	rgb(48, 62, 123)
HSL	hsl(229, 44%, 34%)
HSV	hsv(229, 61%, 48%)
CMYK	cmyk(61%, 49.6%, 0%, 51.8%)
CIE-LAB	lab(28.12, 14.45, -36.57)
CIE-LCH	lch(28.12, 39.32, 291.56°)
OKLab	oklab(38.57% 0.0019 -0.1044)
OKLCH	oklch(38.57% 0.104 271.1)
XYZ	xyz(6.5155, 5.5032, 19.4539)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E7B #7B6D30

analogous

#30637B #303E7B #47307B

triadic

#303E7B #7B303E #3E7B30

tetradic

#303E7B #7B3063 #7B6D30 #307B47

square

#303E7B #7B3063 #7B6D30 #307B47

split-complementary

#303E7B #7B4730 #637B30

monochromatic

#0E1223 #1F284F #303E7B #4154A7 #6375C2

Accessibility & contrast

On white

10.00

#303E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#303E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E7B

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E7B	#FFFFFF	#000000	##FFFFFF
##303E7B	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20467D

Deuteranopia (green-blind)

#143F7A

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #303e7b;
/* rgb */ color: rgb(48, 62, 123);
/* oklch */ color: oklch(38.6% 0.104 271.1);

Tailwind

colors: {
  custom: {
    50: '#7073a1',
    500: '#303e7b',
    950: '#000000',
  },
}

SCSS

$custom: #303e7b;
$custom-light: #7073a1;
$custom-dark: #000000;

JSON

{
  "hex": "#303e7b",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 123
  },
  "hsl": {
    "h": 228.8,
    "s": 43.86,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38573,
    "c": 0.10446,
    "h": 271.1
  },
  "luminance": 0.05504
}

Semantic roles & 50–950 ramp

primary

#303E7B

secondary

#A99B5D

accent

#BC54D4

background

#F7F6FA

surface

#EDECF3

border

#C8C7CD

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #303E7B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →